Dominios de Berceo is the most authentic expression of the best Rioja wine. This is true because these wines have been elaborated from the best grapes found in the whole appellation. They come from the most characteristic Rioja vineyards: prefiloxeric vines that are as strong as a tree, other ones planted in 1936 or the oldest pure graciano vines in Spain, all of them rooted in the best lands of Baños de Ebro and El Ciego municipalities. If one could officially say which is the best Rioja wine, it will surely be within the Dominios (meaning territory) of Berceo.